Partial discharge pc is the unit of partial discharge value. Partial discharge mainly refers to high-voltage electrical equipment. It's called Piron.
Discharge occurred in partial range of power equipment insulation under the action of strong enough electric field. This discharge is limited to only causing partial short circuit (road bridge) of insulation between conductors without forming conductive channel.
brief introduction
Each partial discharge will have some impact on the insulation medium. A slight partial discharge has less impact on the insulation of power equipment, and the insulation strength decreases slowly; However, strong partial discharge will quickly reduce the insulation strength.
This is an important factor to damage the insulation of high-voltage power equipment. Therefore, when designing the insulation of high-voltage power equipment, it is necessary to consider that under the effect of long-term working voltage, strong partial discharge is not allowed to occur in the insulation structure. The monitoring of equipment in operation shall be strengthened. When the partial discharge exceeds a certain degree, the equipment shall be removed from operation for maintenance or replacement.